Justified Posteriors
This week we’re joined by Ioana Marinescu [https://marinescu.eu/], labor economist at the University of Pennsylvania’s School of Social Policy & Practice [https://sp2.upenn.edu/person/ioana-e-marinescu/], former Principal Economist at the U.S. Department of Justice Antitrust Division, and a member of Anthropic’s Economic Advisory Board [https://www.anthropic.com/economic-index]. Ioana is one of the people who put labor-market monopsony on the antitrust map, and she’s now thinking hard about what the social safety net should look like if AI hits the labor market the way the optimists (and the doomers) say it might. We start with her Digitalist Papers [https://www.digitalistpapers.com/vol2/marinescu] essay [https://www.digitalistpapers.com/vol2/marinescu], which proposes a flexible, two-tier toolkit: AI Adjustment Insurance (extended unemployment benefits + retraining + wage insurance, modeled on Trade Adjustment Assistance) for the churn scenario, and a scalable Digital Dividend — a broad-based cash transfer funded by a small tax on the digital sector — for the world where the jobs don’t come back. Along the way: whether to make policy now or wait, what counts as the “status quo,” moral hazard in mass unemployment, the TAA wage-insurance result that repaid its own subsidy, and Andrey’s “we can’t afford UBI” pushback. Then we get into her new model with Konrad Kording, (Artificial) Intelligence Saturation and the Future of Work” [https://papers.ssrn.com/sol3/papers.cfm?abstract_id=6051694]— why splitting the economy into an intelligence sector and a physical sector implies that output and wages saturate even as AI scales to infinity, the robots-vs-LLMs debate, and whether to just relabel “physical” as the non-automatable sector. We close with her DOJ years: defining monopsony, the transmigrante used-car collusion-and-murder case, the Penguin Random House–Simon & Schuster merger (yes, Stephen King testified), antitrust and AI, and a lightning round on ikigai, Camus, and Rawls vs. Mill. Links & References Ioana’s work * marinescu.eu [https://marinescu.eu/] — Ioana’s website · Penn SP2 faculty page [https://sp2.upenn.edu/person/ioana-e-marinescu/] * Ioana Marinescu, “Resilient by Design: Dual Safety Nets for Workers in the AI Economy” [https://www.digitalistpapers.com/vol2/marinescu] — The Digitalist Papers, Vol. 2: The Economics of Transformative AI (volume [https://www.digitalistpapers.com/volume2]) * Konrad Kording & Ioana Marinescu, “(Artificial) Intelligence Saturation and the Future of Work” [https://papers.ssrn.com/sol3/papers.cfm?abstract_id=6051694] — working paper (Brookings write-up & interactive tool [https://www.brookings.edu/articles/artificial-intelligence-saturation-and-the-future-of-work/]). The model finds wage growth can reverse once roughly a third of intelligence tasks are automated. * Ioana Marinescu, comments on Betsey Stevenson’s chapter [https://www.nber.org/system/files/chapters/c15320/c15320.pdf] — NBER, The Economics of Artificial Intelligence: An Agenda (the ikigai discussion) Concepts, papers & people discussed * Trade Adjustment Assistance (TAA) [https://en.wikipedia.org/wiki/Trade_Adjustment_Assistance] — the template for Ioana’s adjustment insurance; the wage-insurance component that got people back to work faster and was net fiscally positive * Betsey Stevenson, “Artificial Intelligence, Income, Employment, and Meaning” [https://www.nber.org/system/files/chapters/c15319/c15319.pdf] — the post-AGI meaning / ikigai argument Ioana was commenting on * “GPTs are GPTs” — Eloundou, Manning, Mishkin & Rock, GPTs are GPTs: An Early Look at the Labor Market Impact Potential of LLMs [https://arxiv.org/abs/2303.10130] — the occupational LLM-exposure measure (”Eloundou et al. / Daniel Rock”) correlated with COVID-era telework * Pascual Restrepo — job-market work on skill mismatch and structural unemployment during automation waves * Daron Acemoglu & Pascual Restrepo, “Robots and Jobs: Evidence from US Labor Markets” [https://www.journals.uchicago.edu/doi/10.1086/705716]. * Albert Camus, The Myth of Sisyphus [https://en.wikipedia.org/wiki/The_Myth_of_Sisyphus]; ikigai (Japanese: “reason for being”) * Baumol’s cost disease [https://en.wikipedia.org/wiki/Baumol_effect] * John Rawls and John Stuart Mill (Utilitarianism) Antitrust & the DOJ * The DOJ Antitrust Division, monopsony in the labor market, and the 2023 Merger Guidelines [https://www.justice.gov/atr/2023-merger-guidelines] * Judge blocks the Penguin Random House–Simon & Schuster merger [https://www.npr.org/2022/11/01/1133375227/federal-judge-blocks-penguin-random-house-from-buying-simon-schuster] (2022) on a labor theory of harm to authors — Stephen King testified for the government * The transmigrante [https://www.justice.gov/opa/pr/eight-individuals-plead-guilty-wide-ranging-scheme-monopolize-transmigrante-forwarding] used-car export case — collusion (and worse) in the US-to-Latin America used-car trade * Anthropic’s Economic Index [https://www.anthropic.com/economic-index] and Economic Advisory Board * Leopold Aschenbrenner’s Situational Awareness [https://situational-awareness.ai/] — the “we’ll have to nationalize it” argument referenced on consolidation Previously on Justified Posteriors * Our episode on the Anthropic Economic Index. Our sponsor * This episode is brought to you by Revelio Labs [https://www.reveliolabs.com/], the leading provider of labor-economics data, available to academics on WRDS [https://wrds-www.wharton.upenn.edu/]. Chapters * (00:00) Intro & sponsor * (00:47) The Digitalist Papers proposal: a flexible safety net for the AI labor shock — and why make policy now * (03:48) Why unemployment insurance isn’t enough, and the Trade Adjustment Assistance template * (05:51) What counts as the “status quo”? Banning AI vs. letting it run * (07:42) How much to insure: moral hazard, mass unemployment, and the three parts of AI Adjustment Insurance * (11:15) Skill mismatch (Restrepo), and how do you certify a layoff was “due to AI”? * (14:45) Did TAA buy social buy-in for free trade? Underfunding — and the wage insurance that repaid its own subsidy * (16:38) “Would Hillary be president?” General-equilibrium pushback and the ski-instructor problem * (19:28) Will the new jobs still be there in two years? The lump-of-labor fallacy * (22:09) Policy B: the Digital Dividend — unconditional, broad-based cash from a small digital-sector tax * (23:52) How to fund it: a sales tax, a sovereign-style fund, and deliberately slowing diffusion a little * (26:00) “We can’t afford UBI”: productivity growth, 0.5% vs. the deficit, and setting money aside ex ante * (30:47) Taxing digital goods: VPNs, evasion, and land-value taxes * (34:23) The motte-and-bailey worry, and the other reasons to like UBI * (36:05) The new model: (Artificial) Intelligence Saturation — intelligence vs. physical sectors, and the telework × AI-exposure correlation * (40:14) Gross complements: why output and wages saturate even with infinite intelligence * (42:23) Won’t enough intelligence just automate the physical world? Robots vs. LLMs * (45:52) “15% by 2030”: humanoid robots, cost, and bespoke vs. general-purpose machines * (47:58) Baumol, the “humanness sector,” and relabeling physical as the non-automatable sector * (48:52) The capital-share / profit-share puzzle: if they’re complements, why has the intelligence share risen? * (50:25) The DOJ years: monopsony, and what the Antitrust Division actually does (mid-roll sponsor at 51:29) * (54:52) “Assassinating rival CEOs”: the transmigrante collusion-and-murder case * (58:12) Favorite cases: Stephen King, the publisher merger, and the chicken-farmer monopsony settlement * (1:01:30) Antitrust and AI: foundation models, consolidation, and the natural-monopoly question * (1:06:05) Slowing AI by allowing market power; Leopold, nationalization, and diminishing returns vs. the singularity * (1:09:27) Substitutability, the AK economy, and short-run vs. long-run wages * (1:10:59) Lightning round: ikigai, Camus, and the myth of Sisyphus * (1:12:44) Can we build market-like mechanisms for ikigai? Loneliness and coordination costs * (1:14:13) The Anthropic Economic Advisory Board and the Economic Index * (1:15:21) What’s next: monopsony and industrial policy * (1:17:59) Favorite philosopher: Rawls vs. John Stuart Mill * (1:19:45) Sign-off Justified Posteriors is the podcast that updates its beliefs about the economics of AI and technology, hosted by Andrey Fradkin [https://www.andreyfradkin.com/] and Seth Benzell [https://www.sethbenzell.com/]. If we changed your priors, subscribe [https://empiricrafting.substack.com/], share it with a friend, and keep your posteriors justified. Intro & Sponsor [00:00 – 00:47] [00:00:06] Seth: Welcome to Justified Posteriors, the podcast that updates beliefs about the economics of AI and technology. I’m Seth Benzell, excited to learn about what AI is other than what my bubbe says after I spill hot water on her, coming to you from Chapman University in sunny Southern California. Andrey: And I’m Andrey Fradkin, coming to you from San Francisco, California. We’re very thankful to our sponsors at Revelio Labs, purveyors of fine data products. And we’re very excited to have Ioana Marinescu join us today. Welcome to the show, Ioana. Ioana: Thank you. I’m so glad to be here. Make Policy Now: A Flexible Safety Net [00:47 – 05:51] [00:00:47] Andrey: To get started — you have this very provocative, interesting piece in the Digitalist Papers about various social policy solutions for transformative AI scenarios. Could you tell us about the piece? Ioana: Absolutely. As part of doing this Digitalist piece, I was thinking, as somebody who has worked a lot on the social safety net: what do we do if AI leads to a lot of job loss, like many people are saying it would? We’ll talk later about the various scenarios, but assuming that’s at least a possibility we have to acknowledge, what would you want to have from a policy perspective? And so I was really thinking hard about devising a flexible policy toolkit that will be able to address issues in the labor market no matter how big the shock is. That was the overarching theme of the policy design I’m proposing — just to start a discussion. I’ve tried to propose some helpful options, but it’s really with the idea of, let’s talk about doing something like this, what are the pros and cons. [00:02:10] Andrey: So what are the options on the menu for — let’s say AI comes along, a lot of people lose their jobs. The first thing we should get started with: do you think we should be making policy today, or should we wait until something happens and then make policy? Ioana: I think it’s very important to make policy today, but in a flexible way — meaning the policy cannot depend on some very specific detail of exactly how AI is going to impact the labor market, because we don’t know exactly what’s going to happen. It’s important to put the policy in place today because the political process is very long, so it may not be able to come online quickly enough when we really need it. That’s one reason. The other is — and I work a lot on social insurance — for workers, they want to and should feel insured. “Whatever happens, we the government have got you covered.” If we don’t have that, and we’re just waiting for bad stuff to happen, that defeats the purpose of having a social safety net. That’s a core reason I think it’s good to have something in place sooner rather than later, even before all the effects of AI on the labor market have materialized. Seth: Something that will automatically kick in. Ioana: Exactly. Andrey: And why is — we do have some programs like that, like unemployment insurance. Why is unemployment insurance not enough in its current form? Ioana: Unemployment insurance is incredibly valuable, but if we have a big shock like AI, it’s going to affect a lot of people who will not necessarily lose their job forever, but simply have to change jobs — and that’s very costly. The whole purpose of the social safety net is to help people through those transitions. The thing is, we have AI, and the way it’s being deployed is a policy choice. We could say we’re going to try to stop AI, but we’re not doing that — and I’m not saying we should or shouldn’t, just that it’s a policy choice. We’re saying we’re not going to stop AI, we’re going to let it be. But then some people are going to get hurt, at least in the short run, and we need to do something so those people have something to fall back on. Just like with trade: we decided to have free trade, we knew some people were going to get hurt and lose their wages, and we put in place policies like trade adjustment assistance — which inspired some of my proposals — to make sure the policy we’d chosen wouldn’t leave people on the side of the road. That policy hasn’t completely worked, because it was underfunded, but the big point is: the technology is exciting and has a lot of benefits, we’ve decided to deploy it quickly, and some people are going to bear a cost. We just want to make sure we help those people. What Counts as the “Status Quo”? [05:51 – 07:42] [00:05:51] Seth: I’m really excited to hear your specific ideas, but I’m curious about this framing of what counts as the status quo and what counts as the policy shock. In the case of trade, you might say the status quo is protectionism and the policy shock is allowing trade — so it makes sense to frame the social insurance relative to that: you shouldn’t be worse off relative to introducing trade. But with AI it’s not obvious. It seems like the policy shock would be to ban AI — AI would happen without the shock. So why not say, “If you banned AI, there should be social insurance to help the people who would have been better off if we’d allowed AI to go full throttle”? How do you think about what the status quo is here? Ioana: I don’t know that the status quo is necessarily the correct reference point — that’s something you could debate. My point is rather that a lot of these technologies have a lot of ramifications, and there’s a decision we make about how we want to control it. Collectively, we’ve made the decision that we’re not going to try to control it too much in its effect on the labor market. And therefore we need to deal with the consequences of helping people who might get hurt, at least in the short run — even though, hopefully, in the long run it will be great for everybody, including them. So we can reassure people that it’s going to be fine. That’s part of the goal of the policy. AI Adjustment Insurance: Moral Hazard and Three Components [07:42 – 14:45] [00:07:42] Andrey: How do you know how much to insure? Full insurance would be very expensive, but it would also create a lot of moral hazard — we do want people making choices in anticipation of AI. If everyone just puts their head in the sand and pretends it’s not happening... Seth: “The automation insurance is too good. I want to get automated — give me that automation insurance.” Ioana: So the insurance is going to be incomplete. And I’ll talk in a moment about what I’m proposing, which is modeled on trade adjustment assistance. But it’s also important to know that some of the moral hazard issues in unemployment insurance — which is something I’ve studied a lot — are much less economically important during times of high unemployment. If what happens is huge amounts of unemployment — not necessarily forever, but a lot of people needing to change jobs — then typically there are too many people looking for jobs relative to the number of vacancies. In that case, the fact that some people might put in less effort to find a job, sending fewer applications, is actually fine, because collectively they’re sending a lot of applications. They’re shooting themselves in the foot by competing too aggressively for the limited number of jobs. [00:09:25] Ioana: So even if more generous unemployment insurance seems like it’s desensitizing people from looking hard for a job, the end effect doesn’t necessarily reduce the number of jobs found, because there are too many unemployed people relative to jobs. My work has shown that in prior situations like COVID. So in a situation like that, we should be far less worried about the disincentive effects of more generous unemployment benefits. And maybe now I’ll come to the policy — I call it AI Adjustment Insurance. It includes more generous unemployment benefits, meaning they last longer (again modeled on trade adjustment assistance); additional training; and a third component, wage insurance. Wage insurance means that if you find a job with a lower wage than your prior job, the policy covers part of that gap. That actually encourages you to take a new job even if the wage is a little lower — so it’s directly pro-reallocation. The training and wage insurance push reallocation, which counteracts the concern that longer unemployment benefits might discourage job search. Seth: Maybe one of your sources is Pascual Restrepo’s job-market paper — this idea that during an automation-driven unemployment wave you get a skill mismatch. Lots of people are applying, but they have the wrong skills, and that increases friction in the market. From an efficiency standpoint, it might not be the worst thing if some of the people with out-of-date skills aren’t looking for jobs. Ioana: Exactly right. That would increase the friction, and this policy, if well-implemented, has the ability to manage that friction better. [00:11:52] Seth: There are many reasons a person might lose their job. They could be losing it because they’re doing a bad job, or because of macroeconomic things that have nothing to do with AI — or it could literally be AI. Recently Coinbase claimed to fire a bunch of people because of AI, and a cynic might say their stock price was going down and crypto was struggling. Do you care to identify that? Is that an important part of the policy? Ioana: Of course you need to identify it, and there are going to be inclusion and exclusion errors — it’s not foolproof. Some people who should be eligible won’t be deemed eligible, and vice versa. But I believe we can put in place a process with reasonable accuracy. That was the case with trade adjustment assistance: the company had to certify that the job was lost due to trade. You can question it, but there was a process. In the case of AI, similarly — and I haven’t fully thought this through; if someone wants to do it, let’s do it. People in these offices know a lot about how to do this. An example: if you’re in an occupation that’s highly exposed, and there’s recently been investment in AI at the firm — buying new software that uses AI to do business services — that might plausibly amount to a layoff due to AI. It won’t be 100% accurate. You could do it at a micro level, trying to figure out whether this particular job got automated, or you could do a macro counterfactual simulation — in a different universe there would have been 30,000 more taxi-driver jobs, so you attribute some percentage of that to your loss. But you can’t do that if you need to decide right now whether this person gets the service. That’s interesting from a research perspective, but operationally we’d have to determine eligibility — maybe just being in an exposed occupation, though that might be too crude. Did Trade Adjustment Assistance Work? [14:45 – 19:28] [00:14:45] Seth: Before we move to your other policy idea — this trade adjustment policy that was supposed to get big societal buy-in for free trade was a glowing success, right? Everybody loves free trade... Ioana: The policy didn’t do well because it was underfunded. The amount of funding is a strict cap decided by Congress, so they just couldn’t spend more. The number of people who received it at all is very small relative to the number exposed to trade. However, for those who did receive it — and remember, I’d argue it wasn’t enough — it worked well. There’s a really cool paper looking at the wage-insurance dimension. So: I lost my job due to trade, I take a new job that pays less, and the wage insurance covers part of that gap for two years. What happened, which is fascinating, is that this component helped people return to work quicker — and it was fiscally net beneficial from the government’s point of view, because they returned to jobs that were no lower-paid than they’d otherwise have taken, started paying payroll taxes again, and essentially repaid their own subsidy over time. So at least based on that experience, it’s a highly effective way to support people through the transition. While the scale of TAA was too small, for those who got it, they benefited a good bit, and it was effective even from a fiscal perspective. Seth: If TAA was more generous, would Hillary Clinton be president? Ioana: Who knows? But I’m going to push back on the argument. Earlier you were making the case that with unemployment insurance, moral hazard isn’t an issue because in general equilibrium there aren’t enough jobs. But if we expanded the size of TAA, the general-equilibrium effects could also swamp the benefits — maybe only a small share of those people could effectively have found jobs, and if you gave the benefits to many more of them, they wouldn’t be able to take advantage. Seth: You mean because the fiscal cost would become significant? Ioana: No — they wouldn’t be able to find the jobs. Seth: Right. If a small number of people get wage insurance and there are some jobs they can take, they take them. But if you give wage insurance to everyone, many wouldn’t be able to find jobs — or they’d cannibalize jobs from people who would have gotten them anyway. Say I worked at a factory, and now I decide to become a ski instructor, and you give me wage insurance for that. There have to be equilibrium effects. Ioana: This is close to my heart, because I’m a big skier. For sure this increases competition for jobs wherever people decide to go. But from a micro perspective, wage insurance helps because people are now willing to expand to jobs that pay a little less. And mind you, it’s only for two years, so you need some commitment that the job is reasonable — and by that time you can increase your wage through returns to experience. It’s similar to research on job-search assistance: you put people on benefits and help them — or even require them — to apply to more jobs. What the research shows is that if you do that for a lot of people within a given labor market, it stops being effective, because they’re trampling on each other’s toes. Will the Jobs Come Back? The Lump-of-Labor Fallacy [19:28 – 22:09] [00:19:28] Andrey: Is there an underlying assumption in your proposal that the occupations people move into won’t go away within those two years? This is one of the big challenges — we have enormous uncertainty about exactly which labor markets are going to be affected negatively, and maybe some positively. What do we do about that? Ioana: I don’t think there’s any guarantee that in two years the places they go will be safe. But if we still have the policy and AI continues to provoke churn, they still have it to rely on and can find another job. Also — and this is less true for non-economists, but a lot of economists imagine there’s a fixed number of jobs, so if we lose a lot, there are only so few left and everyone’s fighting over them. That’s not how it works. Everything is connected, and especially if the technology improves production, there are positive spillover effects that make other jobs more productive. So there will also be a lot of job creation. At the same time, we don’t know exactly what those jobs will be, and it could take several rounds of adjustment. I don’t want to rule out that it could be very bad, but I don’t think a massive net loss in the number of jobs is the most likely scenario. It could be very bad in the sense that a lot of people have to change jobs, which is difficult. But as someone who’s prudent and wants to be flexible — that’s what my second policy is designed to address. What if a lot of jobs are lost forever? Then we need something to fall back on. The Digital Dividend [22:09 – 26:00] [00:22:09] Andrey: Do you want to tell us about that one? Ioana: The second policy addresses a situation where there’s durable mass unemployment — not just people needing to find a different job while other sectors grow, but a lot of jobs disappearing forever, not replaced by new ones, so some people are structurally, permanently unemployed. What do we do with them? This is especially important in the US, where most of the social safety net depends on you either having a job or looking for one. Even food stamps: as a so-called able-bodied adult, you can’t get food stamps unless you have a job or are looking. If there are just no jobs for a large number of people, there’s not much to fall back on. So that’s what policy B — the Digital Dividend — is meant to address. The idea is a cash transfer that’s unconditional and broad-based. In the specific proposal I give it to everyone, but you could make it broad-based so a lot of people benefit. You might fund it with a tax on the digital sector. I don’t want to tax AI specifically, but all sectors that can immediately benefit from it — a broad-based tax, so it’s harder to avoid. Seth: A profit tax? A consumption tax? An income tax? Ioana: I was thinking a sales tax, just to make it easier — but this is something we can talk about. Andrey: No sales tax on GPUs, or...? Ioana: Just a sales tax on all digital companies. We can talk about other options — this is a beginning. The point is it would be very small, and the broader you make it, the smaller it can be while still creating revenue. You’d invest it in a fund, and the returns come back to people as cash. Why this structure? The tax side can slightly slow the diffusion of the technology — and there are theory papers showing that if there are labor-market frictions and credit constraints, reallocation is painful for workers, so it can be optimal to slow diffusion a little. We’re not banning anything. And the revenue lets you pay people the cash benefit if we end up in the no-jobs situation. This policy can be expanded — that’s the flexibility. You can start very small, almost zero tax, but if we have mass unemployment you scale it up and grow the base to the whole economy. Can We Afford UBI? [26:00 – 34:23] [00:26:00] Andrey: All of us have had conversations with technologists who jump straight to UBI as the solution to all issues with AI, and this is one version of it. What I always tell them is that we can’t afford it — and we deeply can’t afford it. There’s some future where productivity gains are so large that the numbers pencil out, but I’ve yet to see a tractable, plausible version. If we did it today, the amount per person would be trivial. And for UBI to truly work — as something that lets people not work — it needs to be a massive transfer. It can’t be even a thousand dollars a month. Ioana: I hear you. But where the technologists are consistent with themselves is that they often think AI is going to revolutionize productivity. If that’s true, then it will be possible to have a reasonably high UBI. And that’s the whole point of my proposal — it’s conditional, we scale it up as needed. I could even envision it not being completely universal, but it should be broad-based, so people have an income to fall back on if technology is deleting a lot of jobs. Andrey: Let’s say a plausible scenario that a lot of economists believe: AI increases per-capita GDP growth by about 0.5 percentage points per year relative to baseline. We’re five years down the road, and in the limit it’ll be big enough to support everyone — but we’re not there yet, and a lot of people are out of jobs by that point. We might not get the super-productive world until well after we have economic displacement massive enough that wage subsidies won’t work. Seth: And we need that 0.5 percentage points just to deal with the current deficits — we’re already counting on it. But here’s what’s natural to me: you start today and make plausible projections — what’s a world with another percentage point of GDP growth a year worth, what’s a world with two? — and you set aside a fraction of that in advance for a UBI or digital dividend. You make the policy now, rather than after the crazy thing happens. It has that automatic logic I really like. Ioana: That’s exactly the point. I’m a little concerned that after a lot of people lose their jobs and the situation looks grim, it might be more difficult to say, “Now let’s have a big reshuffling of money to help these people,” especially when some people have made a lot of money. Whereas if we can commit more ex ante to putting money aside, it’s a bit of a veil-of-ignorance situation — we don’t know for sure who the winners and losers will be. So it can be socially easier to agree to put a parachute in place now, before you know whether you’re a winner or a loser. It’s a political-economy argument, but I think it’s important, because I really worry we get there without enough to support people, and the winners say, “Ah, too bad.” [00:30:47] Seth: My questions are more on the tax side than the spending side. We’ve seen many efforts to tax digital goods, and they’ve had a lot of problems. Where was a Netflix video watched? Where was an ad viewed? People use VPNs; these companies have no physical locations and move easily. How convinced are you that we could actually raise significant revenue from a digital tax when my VPN is in the Cayman Islands, so I’m not paying a sales tax in America? Ioana: That definitely needs to be worked out. With tax policy you always have to think about incidence and evasion — not necessarily illegal evasion, just ways around it. I haven’t done a detailed implementation calculation, but it’s probably feasible to find a version that works. You won’t eliminate evasion — that’s always true with taxes — but you want to think ahead of the incentives. That’s why we’re economists. It’s not like you slap on a tax and the money comes in; there are behavioral adjustments you need to foresee with a coherent design. In principle, it should be possible to raise a good chunk of money if we wanted to. Seth: Related to that — it’s not crazy to think all the rents go to energy producers or even landowners of energy resources. And if we’re taxing them, we might disincentivize energy production, which raises the cost of living. Land-value tax solves all problems forever, of course — I do like land-value taxation. Ioana: In the long run you want to tax the inelastic input, and land is the ultimate inelastic input — that’s something to think about in the long run. But the reason a digital tax can make sense in the short run is this idea of a small, moderate slowdown — not massive — that has the benefit of accumulating some capital to help people with later. As I said in my piece, I’d definitely expand the tax base at some later point, once we think the transition has happened. The Motte-and-Bailey Worry [34:23 – 36:05] [00:34:23] Seth: Are you worried about a motte-and-bailey situation? Your proposal is very modest, but I could see politicians using that logic to implement a massive tax-and-transfer scheme today under the pretense that it’s about the AI future — and I really worry we can’t afford it. Ioana: That gets into the social welfare function — you could call it politics, or simply what we want — and as economists, it’s not really our job; as citizens we can have views. Different politicians legitimately have different ideas about what’s important. Within my piece, I was proposing the digital dividend as a solution to AI unemployment, but there are other reasons to like UBI. I’ve written about UBI before and discussed some of them. So maybe you also like UBI for those reasons — that’s a tenable view, and it’s also fine to disagree. There could be a push to go big right now, and if that’s ultimately what people want and they convince the rest of us, that’s just how the democratic process works. Intelligence Saturation: The Model [36:05 – 42:23] [00:36:05] Seth: Maybe this is a good time to transition into the new macroeconomic model you came out with, which is informing your beliefs about how radical the changes might be — “(Artificial) Intelligence Saturation and the Future of Work.” I love a title with parentheses in it. Just to lay it out for listeners: it’s a very neoclassical way of thinking about automation, but with new twists — a nested constant-elasticity-of-substitution model with an intelligence sector and a physical sector. Why is it important to think about an intelligence sector and a physical sector as complementary, rather than one thing? Ioana: It’s important to distinguish them because of an empirical fact — it’s not yet in the paper, but I’ll add it in the next version. If you look across occupations at which were most teleworked during COVID versus their exposure to AI — the Eloundou et al. measure of LLM exposure — there’s a very strong correlation. The more an occupation was teleworked during COVID, the higher its exposure to AI, and conversely. By “physical” I mean an in-person job, where you need a physical human body. That doesn’t necessarily mean working with your hands — teaching in person is physical in my definition but not manual. It’s just an in-person job. Seth: I was curious about those examples, because you gave the example of an in-person lawyer giving oral arguments — but didn’t we do those online during COVID? Ioana: Some of it we did online, but for the economics, the important thing is how substitutable these things are. Online teaching is its own thing — it has a place and a function, but it’s not the same as in-person teaching. They’re differentiated products; you can’t easily replace one with the other. So based on the fact that AI exposure and the ability to do remote work are highly correlated, that justifies the distinction between physical and intelligence. There are also fundamental limitations of the physical world that are much more stringent than the limitations you meet scaling the virtual world. It’s much more difficult to expand human bodies and physical capital — that’s very slow — whereas you can scale up AI incredibly fast. It’s still not costless — data centers and so on — but you can do a lot, really quickly. This distinction is critical to understanding how AI could affect the economy. [00:40:14] Seth: So you’ve got an intelligence sector growing really fast and a physical sector that maybe doesn’t grow as fast. Let’s roll with the assumption that the two are gross complements — you need both to have a lot of output; you can’t just have the peanut butter or the jelly. What are the conclusions of the model? Ioana: The core conclusion is that if physical and intelligence are complements, then AI can grow the intelligence side incredibly — to infinite intelligence — but as long as the physical sector stays fixed (or grows much slower), the impact of growing AI saturates on both output and wages. By saturating, I mean output goes to a finite limit, a ceiling. Even with infinite intelligence and infinite AI, output is strictly bounded. Wages increase too, because they go together with output, but they hit a ceiling. That’s what we call intelligence saturation. This is super important because a lot of technologists see the progress of AI and imagine the whole economy could expand at a similar rate. This makes the strong point that here’s a scenario I think is quite plausible: you could expand like crazy in AI and still only hit a ceiling in output. Robots vs. LLMs [42:23 – 48:52] [00:42:23] Andrey: I understand the thought experiment, but saying intelligence goes to infinity while the physical is a constraint is a little strange — it’s pretty clear that with enough intelligence we’ll figure out how to make robots work, even self-replicating, learning systems. Seth: There are two different parameters in the model, right? You’ve got the output of the intelligence sector, and then the automatability of the physical sector. So Andrey’s intuition is: if we had a gazillion intelligence, don’t we fully automate the physical sector? Ioana: I want to distinguish two things. One is whether humans can be replaced with robots. Robots are improving, but relatively slowly compared to AI. So comparatively, it’s much more advantageous to replace people on the AI-replaceable side than in applications where you need to be there in person. That’s not to say there’s no progress in robotics. Andrey: I’m just representing the technologist viewpoint — that this is true for now. Ioana: The argument I’m going to make is based on history — the history of technology specifically, and you can think history won’t be the same. We’ve had physical robots for the longest time. With the Industrial Revolution we created many more and improved them a lot, and even before LLMs they improved tremendously with machine learning and semi-autonomous systems. These are very real improvements, and they have replaced some jobs in manufacturing — Daron Acemoglu has papers on that. But it wasn’t like, “wow,” thanks to all that intelligence in the system, it still takes a lot to get there. I’m totally willing to think this new technology can make them even better — but I’m skeptical it gets a lot, lot, lot better. It’s the saturation argument: there’s a fundamental limit. The cost of robots is fundamental — you have to use materials to make them and maintain them. We’ve tried for centuries to improve robots, and they have improved, but I don’t know how much more you can improve them with this new technology. Andrey: A humanoid robot that’s smarter than a human seems like a pretty big improvement that’s plausible. Seth: 15% chance, according to a recent survey of economists and AI researchers. By 2030. Ioana: The question is partially the cost — not that it’s technically impossible, but what’s the cost of the whole thing relative to a human. At least in the medium run, I think it’s not very plausible you’ll bring that cost down a great deal. Also, a lot of these robots aren’t very versatile, unlike AI. That’s the cool thing with AI — it’s super general-purpose; it can use all the tools we had before. But most industrial robots are bespoke, meant for a particular application — that’s how you make them cheap and effective. I feel somewhat confident that in the short-to-medium run it will be very difficult to make it cost-effective to have robots replace people in most jobs. Harder to tell the further out you go. However, I believe everything you could do on a computer could get automated in the medium term — possibly even the research I’m doing. That’s a different matter, because it’s all based on computers. Andrey: Even if what I’m saying is true, the Baumol-style logic would still hold, right? If we still want human teachers even when robots are available... Seth: Maybe don’t call it the physical sector — call it the humanness sector. Ioana: You could relabel it. I think “physical” is relevant at least in the medium run, but to make it more future-proof, you could relabel the physical sector as the non-automatable sector, whatever that turns out to be. As long as there exists a non-automatable sector, that’s where people will work, and the mechanics of the model are identical. The Capital-Share Puzzle [48:52 – 50:35] [00:48:52] Seth: I love playing around with these neoclassical models — automatable part, non-automatable part. I’ve been doing it for a decade, and one challenge that pushes historically in a different direction: if intelligence and physical stuff are gross complements, you’d expect that as you get more intelligent stuff, its share of national income would go down. But over the last 50 years we’ve seen a huge explosion in education in the US, and yet the educated share of income has been going up. So how do I think about it actually looking more like gross substitutes? Ioana: But we’ve also had the share of capital going up. Part of the last 30 years or so is the ICT revolution, which is somewhat similar to the prior version — really you could say it’s the same thing, just different stages of an AI revolution that’s at an early stage. During that, the share of capital has been going up, and research suggests— Seth: Is it the share of capital, or the profit share? That’s an important question we’ll come to in a minute. Inside the DOJ Antitrust Division [50:35 – 58:12] [00:50:35] Andrey: You did this stint at the DOJ — you were on leave from being a professor. Could you tell us what led you to work there, and a bit about your work? Ioana: At the time I was doing work on monopsony power in the labor market — the difference between wages and the marginal productivity of labor. The Biden administration commissioned a report on labor-market monopsony, and the people doing that called me up; that’s how I learned about the job. I thought, “That sounds really interesting — to do antitrust enforcement as an economist.” I said yes, and I was lucky enough to get the job. [00:51:29] Seth: [Sponsor break] For those of you playing along at home, now is your chance to think about how this conversation has changed your priors. This chance to contemplate your posteriors is sponsored by Revelio Labs — a leading provider of labor-economics data and data services for companies, academics, and independent researchers. Revelio combines comprehensive micro-level data on employee profiles, job postings, and sentiment with standardizations, mappings, and enrichments, all to make the data useful without making your modeling decisions for you. It can be aggregated to company, market, or industry, and used to study everything from career trajectories to occupational transformation to the impact of AI on labor demand. Revelio data is available on WRDS — so if you’re an academic with a good library, go see if you have access already. And if not, reach out to their excellent economics team. [00:52:43] Ioana: It was an incredible experience. What I did there is — I was the principal economist— Andrey: Can you pause and define monopsony for our listeners? Ioana: Monopsony power is the idea that employers are able to pay workers less than their marginal productivity. Under perfect competition, the wage exactly equals the marginal productivity of labor — whatever value the worker brings, the company pays them for it. With monopsony power, workers get paid less than what they bring to the company. One of the key reasons is the lack of competition among employers. Intuitively, in the extreme — a literal monopsony, only one employer — that employer doesn’t need to pay much to keep you. Whereas if there are many employers, they bid up the price of labor by competing for you, and in the competitive extreme you get paid your marginal product, because if someone underpays you, a neighboring employer recruits you away. Andrey: Great — so you can continue. Ioana: So when I was at the DOJ, I was the principal economist. In the antitrust division, the job is to enforce the antitrust laws, and they do two broad things. One is examining mergers and potentially blocking them if they lead to anti-competitive effects. The other is so-called conduct, which can include criminal conduct like literal collusion— Seth: Assassinating rival CEOs. Ioana: A situation kind of like that — which is unbelievable. You think it only happens in the movies, but it happens in real life. Economists don’t get too involved in those cases, because it’s more of a whodunit. Andrey: No fun. Let us in — we want to be detectives. Ioana: If you want to look this up, the keyword is transmigrante — a trade in used cars from the US being traded toward Latin America. There was unbelievable murder among the companies involved, around collusion. If you were a traitor to the scheme... yes. Anyway, that’s the monopsony power. Andrey: That’s one way to get monopsony power. Ioana: This is where the FBI goes — not really the province of economists. The other category is a bunch of behaviors by firms that hinder competition, the big one being monopolization — trying to remain or become a monopoly by kneecapping rivals. In my role I oversaw the expert analysis group, a team of about 50 PhDs, mostly economists and data scientists. Whenever we had a case against a company, there’d be data gathering and economic analysis to support arguments about why a behavior hinders competition and might, for example, increase prices — or, in a labor-market case, how employers hinder their employees’ ability to find another job, and so can pay them less. For someone who worked on monopsony, being able to think about how mergers should be blocked if they lead to greater monopsony power was incredibly rewarding. Intuitively, if two employers merge, that reduces competition for workers and can lower wages or degrade non-wage dimensions of jobs. That’s now officially in the merger guidelines — which was unbelievable. How often do you do research and then get to implement the thing? Favorite Cases, and Antitrust Meets AI [58:12 – 1:09:27] [00:58:12] Andrey: Is there a monopsony case you worked on that you’re particularly excited about? Ioana: There were a number. They’re described in papers we write every year reporting on finished cases, in the Review of Industrial Organization. One — I only caught the tail end — was a publisher merger. Big publishers were trying to merge, and the argument was that if they merged, authors trying to sell their books would get lower payments. The judge found it very convincing. We even had Stephen King testify about how the merger would reduce what he could get paid. Andrey: He couldn’t afford all the cocaine he needed. Ioana: Ultimately the merger was blocked, and they decided not to appeal. That was the first merger in the US blocked exclusively on a labor theory of harm — that it would lead to lower payment for authors. The other is an interesting case around small farmers who raise chickens. They work for a processor as subcontractors — small farmers, not workers, but worker-like. They raise chicken and sell it to a big integrator. There was a contractual term that if you left to work for a different company, you’d have to pay a big chunk of cash to leave. We argued this significantly restricted competition for these farmers’ services and lowered their pay, because it’s hard to leave if you have to pay to do so. We won in the sense that there was a settlement — the company said, “Fine, we’re not doing it anymore.” I did a lot of work on agriculture, because farming is often an area with few opportunities to sell labor or goods, so monopsony is prevalent there. This tells listeners that monopsony — whether there’s competition among buyers — isn’t just about workers. Workers are a big application, but it can also be a more B2B situation, where many small businesses or independent contractors sell to big buyers with market power. [01:01:30] Andrey: Shifting slightly — something people are beginning to think about is antitrust and AI. Have you thought about that? Do you have opinions? Ioana: It’s really important to stay vigilant in AI and antitrust. We’ve had prior tech giants the government has gone after — Microsoft, Google — and in these industries there can be an opportunity to monopolize. We’re not there right now, but that’s why we have watchdogs like the Antitrust Division. There’s been a lot of partnership and financing deals, which might ultimately lead to consolidation, and that should be watched in the ordinary course of antitrust enforcement. Why does this matter? We want to maintain low prices and high-quality services for consumers and businesses — and a big part of AI is used by businesses. If you want this technology to lead to greater productivity through adoption, you want to keep it cheap and good. What usually happens with consolidation is the product gets worse and prices get higher than they’d be in a more competitive industry. It’s natural for companies to try to monopolize — that’s why we have the Antitrust Division and the FTC, and also so that companies considering certain steps recognize some might not be lawful and stay away from them, preserving competition. Seth: That’s generally the argument, but sometimes we have natural monopolies. Some argue these big foundation-model builders — OpenAI, Anthropic — pouring giant amounts into training runs might be natural monopolies. Maybe we just want one company doing the one giant training run, and the right way to regulate isn’t competition policy but tax policy or some other government control. What do you think? Ioana: It could be, but it’s not clear yet, because there are still many foundation models, including outside the US — the data is out there. You need data and power to train, but you can do it multiple times if you have the resources. There’s also a difference: in the US there’s a big focus on the biggest, fastest foundation models, but in places like China it’s much more focused on applications, and there you see a lot of competition. Some company might want to have it all — “Why don’t I have all the applications?” — and that’s why we have the antitrust authority to stop that. In some situations a utilities-type regulation can make sense, but I think we’re not there yet. For now I’d take the position that we should promote competition, and we’ll see where the dust settles. If you prematurely favor monopoly, that can actually hinder the development of the technology. So I’ll err on the side of competition. Andrey: One interesting thing here: if you’re the person who thinks we should slow things down, then you should be rooting for more market power. Leopold famously argued the technology is so powerful we’re going to have to nationalize it — which again goes to an argument for more market power rather than less. I’m not saying I support this, just throwing it out as a slightly unusual difference from most industries. Seth: Energy might be similar — or nuclear power would be a different analogy. Ioana: The thing is, you can still use a model from elsewhere — whereas with energy there are huge costs of transmission lines, so it’s more limited geographically. And let me make a point related to my saturation paper that’s highly relevant. Assume there are decreasing returns — you add more intelligence, it’s helpful, but less and less helpful at the margin. If that’s the case, then the whole competition between countries is less— Seth: Then America loses, because China is better at physical stuff. Ioana: The point is rather that being first is not that important if you have diminishing returns. It’s important, but less so, because if you’re second, you’re just a little bit worse and can still do a lot of things almost as well. Whereas if it’s “the singularity, boom,” and then you’re far ahead of everyone, being there first really matters. So whether you think you’ll reach a point of explosion versus diminishing returns completely changes how you think about competition between countries — and even between different models. Andrey: There’s a subtle point: you could have diminishing returns, but the nature of military conflict is a contest — you just need the max. So it’s very different from the economy. Ioana: I feel less of an expert on military. I was talking more about economic might — if there are diminishing returns, it’s nice to be first, but it’s only— Seth: Let’s talk about economic might, because your argument is even stronger than the one you’re making. In a universe where American innovations in AI spill over into Chinese innovation — which they do, with distillation and publicly written papers — if China has the advantage in the physical, we’d want a world less constrained by the physical. We’d want slower progress. Ioana: That gets to things we discuss in our paper — how much substitutability there is between physical and intelligence from the workers’ point of view. The paper is about what happens to workers and equilibrium wages during automation versus after. During automation — assume you’re automating all intelligence tasks — low substitutability is a form of insurance for workers; it avoids some of the worst wage outcomes, especially at high levels of automation. But after, once we all work in the physical sector, more substitutability promotes higher wages and growth in the very long run. So the game is different depending on whether you’re in the short run, during automation, or after. Seth: In the very long run, you want an AK economy. Ioana: Exactly. In the long run it’s good, but in the short run it could be better not to have it, in terms of avoiding a wage decline. Lightning Round [1:10:59 – 1:19:45] [01:10:59] Seth: Lightning round. What’s the meaning of life? In your discussion of a Betsey Stevenson paper at a recent NBER session, you said that after automation takes all our jobs, something called ikigai will be more important. What is that? Ioana: It’s the idea of having a sense of the inherent meaning of your everyday activities. This is something Betsey Stevenson proposed, and I was commenting on it and thinking about examples from philosophy. Ikigai is a Japanese concept, but we have other examples in Western philosophy — the French writer Camus, and the myth of Sisyphus. You imagine Sisyphus pushing a boulder up the hill; it rolls down, and he pushes it up again. It seems pointless. However, the myth says you have to imagine Sisyphus happy: he finds satisfaction in the repetition and transcends the fact that it’s repetitive, making sense of his life by becoming absorbed in it and seeing his freedom in embracing it. It’s a very inspiring way of thinking, because in the current regime we’re so obsessed — especially in economics — with making more stuff, versus paying attention to what we already have. Seth: But then you immediately economist-brain it, because you have this amazing quote: “If there are no market-like mechanisms to encourage people to pursue their ikigai, just as wages incentivize people to work, a world without transformative AI”— sorry, a world with transformative AI but without work could undermine wellbeing. So how do we incentivize ikigai? Ioana: That’s something I want to work on — so if anybody’s listening and wants to embark on this quest, I’m all for it. Maybe you’ve read about the epidemic of loneliness. Why aren’t people getting out and doing social activities? As economists, we think in terms of cost — there must be friction costs, coordination costs. The question is how you engineer a world where those costs are lower and people actually get out, meet friends, do their gardening or their rock-pushing, instead of sitting there contemplating how they’re doing. Andrey: You climb the rocks rather than push them. Seth: We’ve got a rock climber in the room. The social planner will assign you the rock, and you will experience ikigai pushing the rock. Ioana: No, no — it’s going to be a market-like mechanism. [01:14:13] Seth: Do you want to say anything about your work on the Anthropic Economic Advisory Board? Ioana: I’m a member of Anthropic’s economic advisory board, advising them on the economic impact of AI. As you probably know, Anthropic releases data products publicly that measure how Claude is being used. Part of my role is to give feedback on what data would be helpful to release, what checks to do, how to show people what the data means and what its representativeness looks like. It’s been exciting to collaborate with one of the biggest AI companies and play this advisory role. Andrey: And we’ve covered the Economic Index on this podcast — we had an entire episode about it. Ioana: Oh, really? Nice. Seth: What are you working on these days? What can we expect next? Ioana: Right now I’m working on a project, back to monopsony — monopsony and industrial policy. Industrial policy is fashionable right now. If you subsidize a sector — the government pays to create more jobs there — one effect is that it raises wages in the other sector that competes for those workers. You increase employment here, and wages increase there. We want to demonstrate under what conditions you get a bigger or smaller spillover, and therefore why industrial policy can sometimes be justified through this argument — you’re paying to get more competition for jobs. Seth: Although there would be a negative spillover from the taxes or regulation needed to support it. Ioana: Absolutely. You put some cost in for the industrial policy, and one benefit is increasing wages in the non-subsidized sector. It’s also a way to redistribute between wages and profits — you decrease profits and increase wages in the non-subsidized sector. And profits are pretty hard to tax, so it’s an interesting instrument. We’re developing the theory — how much monopsony power yields what optimal size of subsidized sector — and thinking about applications. The big-picture point is that the public has often lost confidence in the government’s ability to redistribute effectively through tax-and-transfer. So if we can provide more jobs while also increasing wages in the other sector, that could be an interesting policy instrument — one that comes with its own costs, but worth understanding better. Andrey: Final question: who’s your favorite philosopher? Seth: And we love the way you pronounce Camus, so say it with that beautiful accent. Ioana: Who’s my favorite philosopher? That’s surprisingly difficult. I might go with Rawls — John Rawls. Seth: Beloved of liberals. Ioana: He’s done incredible work, because he incorporated considerations from utilitarianism. Whether you agree with his take or not, he clarified a lot about the different theoretical frameworks for thinking about social justice. When I was growing up intellectually, it was very helpful. Actually, I learned about utilitarianism first — I read Mill. Oh, I love John Stuart Mill. Maybe he’s my favorite, actually — because the writing is amazing, and he has such a nuanced view of the world. His book on utilitarianism is amazing. They speak very nicely to each other — so maybe I have to say John Stuart Mill, which is fitting for an economist. Andrey: Tyler Cowen thinks he’s the best economist ever. So you’re in good company. [01:19:45] Seth: It’s been an absolute pleasure to have you on the podcast — I had so much fun. Ioana: Thanks so much. It was great. Andrey: This was awesome. Thank you. Seth: All right, everyone out there — please like, share, subscribe, and keep your posteriors justified. Get full access to Justified Posteriors at empiricrafting.substack.com/subscribe [https://empiricrafting.substack.com/subscribe?utm_medium=podcast&utm_campaign=CTA_4]
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